EP1344592A3 - Method for sintering tungsten powder - Google Patents

Method for sintering tungsten powder Download PDF

Info

Publication number
EP1344592A3
EP1344592A3 EP03251517A EP03251517A EP1344592A3 EP 1344592 A3 EP1344592 A3 EP 1344592A3 EP 03251517 A EP03251517 A EP 03251517A EP 03251517 A EP03251517 A EP 03251517A EP 1344592 A3 EP1344592 A3 EP 1344592A3
Authority
EP
European Patent Office
Prior art keywords
formed body
tungsten powder
powder mixture
combustion synthesis
sintering tungsten
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP03251517A
Other languages
German (de)
French (fr)
Other versions
EP1344592B1 (en
EP1344592A2 (en
Inventor
Yoshinari National Inst. Materials Science Kaieda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
National Institute for Materials Science
Original Assignee
National Institute for Materials Science
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by National Institute for Materials Science filed Critical National Institute for Materials Science
Publication of EP1344592A2 publication Critical patent/EP1344592A2/en
Publication of EP1344592A3 publication Critical patent/EP1344592A3/en
Application granted granted Critical
Publication of EP1344592B1 publication Critical patent/EP1344592B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/02—Compacting only
    • B22F3/08—Compacting only by explosive forces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10—Sintering only
    • B22F3/1003—Use of special medium during sintering, e.g. sintering aid
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/045—Alloys based on refractory metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10—Sintering only
    • B22F2003/1042—Sintering only with support for articles to be sintered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)
  • Ceramic Products (AREA)

Abstract

A formed body (9) prepared by compacting tungsten powders is embedded in a powder mixture (10) capable of performing combustion synthesis, a part of the powder mixture is powerfully heated to ignite the part and perform combustion synthesis, by the heat of formation released, a temperature of a formed body is instantaneously elevated to induce a sintering reaction, and a high temperature state is retained to convert a whole of the formed body into sintered tungsten.
EP03251517A 2002-03-13 2003-03-13 Method for sintering tungsten powder Expired - Fee Related EP1344592B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2002069239 2002-03-13
JP2002069239A JP3697509B2 (en) 2002-03-13 2002-03-13 Method for sintering tungsten powder

Publications (3)

Publication Number Publication Date
EP1344592A2 EP1344592A2 (en) 2003-09-17
EP1344592A3 true EP1344592A3 (en) 2005-11-23
EP1344592B1 EP1344592B1 (en) 2010-05-19

Family

ID=27764522

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03251517A Expired - Fee Related EP1344592B1 (en) 2002-03-13 2003-03-13 Method for sintering tungsten powder

Country Status (4)

Country Link
US (1) US6899845B2 (en)
EP (1) EP1344592B1 (en)
JP (1) JP3697509B2 (en)
DE (1) DE60332574D1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3697510B2 (en) * 2002-03-13 2005-09-21 独立行政法人物質・材料研究機構 Manufacturing method of WC cemented carbide

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4761262A (en) * 1985-02-15 1988-08-02 Kabushiki Kaisha Komatsu Seisakusho Sintering method
EP0429665A1 (en) * 1989-06-12 1991-06-05 Kabushiki Kaisha Komatsu Seisakusho Method of producing ceramic sinter
US5826160A (en) * 1995-08-14 1998-10-20 The United States Of America As Represented By The Secretary Of The Army Hot explosive consolidation of refractory metal and alloys

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5188678A (en) * 1990-08-15 1993-02-23 University Of Cincinnati Manufacture of net shaped metal ceramic composite engineering components by self-propagating synthesis
US5380409A (en) * 1993-03-08 1995-01-10 The Regents Of The University Of California Field-assisted combustion synthesis
JP2003344759A (en) * 2002-05-30 2003-12-03 Fuji Photo Optical Co Ltd Objective lens for optical recording medium and optical pickup device using the same
JP2003344592A (en) * 2002-05-31 2003-12-03 Fuji Photo Film Co Ltd Phosphor sheet production method and device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4761262A (en) * 1985-02-15 1988-08-02 Kabushiki Kaisha Komatsu Seisakusho Sintering method
EP0429665A1 (en) * 1989-06-12 1991-06-05 Kabushiki Kaisha Komatsu Seisakusho Method of producing ceramic sinter
US5826160A (en) * 1995-08-14 1998-10-20 The United States Of America As Represented By The Secretary Of The Army Hot explosive consolidation of refractory metal and alloys

Also Published As

Publication number Publication date
JP3697509B2 (en) 2005-09-21
EP1344592B1 (en) 2010-05-19
EP1344592A2 (en) 2003-09-17
DE60332574D1 (en) 2010-07-01
US6899845B2 (en) 2005-05-31
JP2003268411A (en) 2003-09-25
US20040001772A1 (en) 2004-01-01

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